Pretreatment of polyvinyl chloride plastics for electroless depo

Details Pretreatment of polyvinyl chloride plastics for electroless depo Pretreatment of polyvinyl chloride plastics for electroless depo

1977-12-16

1978-12-26

Smith, John D.

Coating processes

With pretreatment of the base

Preapplied reactant or reaction promoter or hardener

156668, 252 795, 427 57, 427305, 427306, 427307, 427299, 427316, 427316, C23C 302

Patent

active

041316983

ABSTRACT:
A process for pretreating polyvinyl chloride plastics to form adherent non-grainy conformal metal coatings by electroless deposition comprising immersing the polyvinyl chloride plastic in a solution comprising at least about 10 grams of alkali metal hydroxide dissolved in a solution consisting of about 5% to about 30% by volume of a water-soluble mono-, di-, or polyhydric alcohol and about 70% to about 95% by volume of water. The immersion time is variable from about 5 minutes in ultrasonically agitated, mildly heated solutions to about 6 to about 8 hours in non-agitated, unheated solutions. After pretreatment, the polyvinyl chloride plastic is treated by standard electroless plating procedures known in the art.

REFERENCES:
patent: 3361589 (1968-01-01), Lindsey
patent: 3702286 (1972-11-01), Ichiki et al.
patent: 3716394 (1973-02-01), Waggoner
patent: 3770528 (1973-11-01), Hermes
patent: 3791848 (1974-02-01), De Angelo
patent: 3914520 (1975-10-01), Hovey
patent: 3962496 (1976-06-01), Leech
Richter, Textbook of Organic Chemistry, John Wiley & Sons, c. 1943, p. 244.

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